A musical production is a form of entertainment that combines music, singing, and dancing. The term can refer to four different types of productions: a NOTE, a REVUE, an opus, and an OPERA. A NOTE is a short piece of music, usually for one instrument or voice. A REVUE is a type of musical theater production that consists of a series of short sketches, songs, and dances. An opus is a large-scale musical composition, often with multiple movements. Finally, an OPERA is a dramatic work combining music and spoken dialogue.